Katayama syndrome.
D000208:Acute Disease; D000293:Adolescent; D002648:Child; D003092:Colitis / Q000469:parasitology*; D006801:Humans; D008297:Male; D012529:Saudi Arabia; D012555:Schistosomiasis mansoni / Q000175:diagnosis; D012812:Sigmoidoscopy; D013550:Swimming; D014195:Travel; D015006:Yemen